EP3215284B1 - Outil de cintrage avec dispositif de mesure de la géométrie de cintrage - Google Patents

Outil de cintrage avec dispositif de mesure de la géométrie de cintrage Download PDF

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Publication number
EP3215284B1
EP3215284B1 EP15813231.6A EP15813231A EP3215284B1 EP 3215284 B1 EP3215284 B1 EP 3215284B1 EP 15813231 A EP15813231 A EP 15813231A EP 3215284 B1 EP3215284 B1 EP 3215284B1
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EP
European Patent Office
Prior art keywords
bending
tool
bending tool
light pattern
tool according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP15813231.6A
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German (de)
English (en)
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EP3215284A1 (fr
EP3215284C0 (fr
Inventor
Gerhard Angerer
Klemens Freudenthaler
Josef Gaggl
Matthias HÖRL
Helmut Theis
Manfred WALDHERR
Thomas Weiss
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Trumpf Maschinen Austria GmbH and Co KG
Original Assignee
Trumpf Maschinen Austria GmbH and Co KG
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Publication date
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Publication of EP3215284A1 publication Critical patent/EP3215284A1/fr
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Publication of EP3215284B1 publication Critical patent/EP3215284B1/fr
Publication of EP3215284C0 publication Critical patent/EP3215284C0/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/006—Bending sheet metal along straight lines, e.g. to form simple curves combined with measuring of bends
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
    • B21D5/0209—Tools therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/04—Bending sheet metal along straight lines, e.g. to form simple curves on brakes making use of clamping means on one side of the work
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
    • G01B11/167—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge by projecting a pattern on the object
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
    • G01B11/25—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. one or more lines, moiré fringes on the object
    • G01B11/2545—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. one or more lines, moiré fringes on the object with one projection direction and several detection directions, e.g. stereo
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes

Definitions

  • the invention relates to a bending tool with a bending geometry measuring device.
  • the bending pressure with which a bending press presses the bending tool against the sheet metal part to be bent and consequently into the lower tool, or by which angle the bending beam tool pivots essentially depends on the material properties of the workpiece to be formed. Due to fluctuations in the material parameters of the sheet metal part to be formed, in particular the sheet metal thickness, the immersion depth determined according to the model or the pivoting angle determined may not be correct for the bending forming currently to be carried out and a deviating bending angle will therefore result.
  • Pivoting in relation to pivot bending is understood here to mean that, viewed in the direction of the bending line, the path of movement of the bending tool can have a general course. In a special case, this can be a circular path, with the clamping point of the sheet metal through the hold-down tools as the center point. In particular, the trajectory can also have a complex course. It can thus be achieved that there is as little sliding movement of the sheet metal as possible in relation to the bending beam tool and thus a high surface quality can be achieved.
  • Devices are known from the state of the art which, with or without contact, determine the bending angle that occurs during bending.
  • the DE 694 01 594 T2 a lower tool with a stylus that opens upwards. This stylus is arranged outside the bending edge and rests on the outside of the bending beam.
  • the document also discloses a method for compensating for springback that occurs during the bending process.
  • the applied by the bending press Bending force determined by means of a pressure transducer and also determined by forming a differential on the course of the bending angle, the bending angle achieved. This can be used to determine the necessary bending angle to compensate for the springback.
  • the DE 600 00 908 T2 discloses an apparatus for measuring the bend angle and transmitting the measured bend angle to the machine controller. This is carried out using a hand-held device designed as an angle gauge, which hand-held device has contact legs that are placed on the bending legs. The torsion angle between the contact legs is read out, displayed as an angle and transmitted to the control.
  • the US 4,408,471A discloses a method and apparatus for suppressing springback in bending.
  • the press pressure applied by the bending press is determined by means of force sensors.
  • the position of the bending punch in relation to the bending die or to the sheet metal to be formed is determined by means of a position determination device.
  • the required penetration depth of the press ram or sheet metal into the die is determined from the force-displacement diagram in order to prevent the flexible legs from springing back.
  • EP0470263A1 discloses a measuring method for measuring the deformation of a metal sheet to be bent, wherein in EP0470263A1 no beam splitter for projecting the light pattern on both sides of the sheet extending from the working edge.
  • WO0128706A1 on which the preamble of claim 1 is based discloses the use of multiple light sources on both sides of the working edge to project the light pattern onto both sides of the metal sheet extending from the working edge.
  • NL1007290C1 revealed similar to WO0128706A1 the arrangement of light sources on either side of the working edge.
  • Another disadvantage is that with the known devices, only the bending up of the flexible leg is determined, with no material deformation whatsoever taking place on the flexible leg due to the lowering press ram. However, the bending and thus the essential event for the bending angle to be achieved or the springback to be avoided takes place between the bending punch and the bending die.
  • the object of the invention is therefore to create a measuring device in which the bending geometry achieved and the springback to be expected can be determined and corrected while the bending deformation is being carried out.
  • the object of the invention is achieved by a bending tool with a bending geometry measuring device, which bending tool is part of a bending tool arrangement for use in a bending machine.
  • the bending tool has a tool body with a longitudinal extent, with a working edge being formed parallel to the longitudinal extent. Furthermore, the working edge and a working direction normal to the working edge span a bending plane.
  • a light pattern emitting device with a beam splitter which is arranged in an outlet arranged in the area of the working edge, for emitting a light pattern on both sides of the working edge onto a surface of a sheet metal part to be formed.
  • At least one image capturing device which is designed to capture a projection of the light pattern onto a surface, is also arranged in an end region of the tool body.
  • the bending geometry can be determined without the need for significant modifications to an existing bending machine, since the lower tool in question can be used or can be used in an existing bending tool arrangement. Furthermore, it is advantageous if the bending deformation is not impaired by additional attachments to the bending machine, but instead the determination of the bending geometry is made possible directly by a bending tool involved in the bending deformation.
  • the light pattern emitted by the light pattern emitter impinges on the surface of the sheet metal to be bent and is scattered or reflected by it. In any case, part of the reflected light is recorded by the image capturing device.
  • a development consists in the light pattern output device having a light source with a beam shaper.
  • a beam shaper can be formed, for example, by an optical system and a diaphragm that may be present.
  • the light pattern should preferably be directed as far as possible onto the sheet metal surface.
  • the emission characteristics of the light source may not meet the requirements for a directed light beam, so beam shaping is advantageous here.
  • the light yield can also be increased and the intensity of the luminous pattern on the sheet metal surface can thus be increased.
  • the light pattern can be emitted on one side next to the bending edge in the direction of the metal sheet. With the beam splitter, it is possible to emit a light pattern onto the sheet metal on both sides of the working edge with just one light source.
  • An embodiment according to which the light pattern emission device is arranged in a recess of the tool body is advantageous.
  • When carrying out the bending or when inserting the sheet metal there is an increased risk of damage to devices that are arranged in the area of the bending tools.
  • Devices on the bending tool can also limit the possible working range of the tool. With the present development, it can be ensured that the light pattern emitting device is protected by the bending tool on the one hand and on the other hand does not impair the usable bending area when the metal sheet is bent open.
  • an outlet for the light pattern emitted by the light pattern emitting device is provided in the area of the working edge. Since the pressing force acts on the sheet metal part via the working edge, the deformation or reshaping of the sheet metal will also occur here.
  • the present development ensures that the light pattern can be reliably projected onto the metal sheet in this area.
  • a development also consists in the fact that an inlet opening is present in a surface adjoining the working edge and aligned along the working edge. This design ensures that the light pattern projected onto the sheet metal surface can be recorded by the image capturing device.
  • the image capturing device is arranged in the entry opening.
  • This space-saving design makes it possible to keep the distance between the projected light pattern and the image capturing device as small as possible. This is particularly advantageous for reliable detection of the projected light pattern.
  • a light guiding element is arranged between the entry opening and the image capturing device.
  • the image capturing device can thus be arranged in the area of favorable space conditions in the tool body without restricting the capturing options.
  • the evaluation unit has an image analysis module.
  • This module is designed to analyze the captured image of the light pattern on the sheet metal surface and to compare the captured image with the light pattern originally emitted. In particular, a deviation between the transmitted and the recorded pattern should be determined in order to determine the current bending geometry.
  • the evaluation unit can have a control output via which commands can be transmitted to a machine control in order to influence the bending process. Preferably to end the bending process when a desired bending geometry is reached.
  • the tool body prefferably has a fastening extension opposite the working edge, with a further development providing for the evaluation unit to be connected to an interface in the fastening extension which is designed to transmit electrical energy and/or data.
  • Signals from the evaluation device can be forwarded to a machine controller without requiring an additional coupling unit.
  • the light pattern has a brightness distribution which is in the form of a grid, strips or points. This has the advantage that a pattern with a high contrast gradient is projected onto the surface of the sheet metal, which significantly improves the detection reliability of the bending curve.
  • the brightness distribution is deterministic, stochastic or pseudo-stochastic.
  • a deterministic brightness distribution it may happen that a surface structure of the metal sheet interferes with the brightness pattern, leading to a deterioration in the detection accuracy. This can be avoided with a stochastic or pseudo-stochastic brightness distribution.
  • the bending tool is formed by an upper tool or a lower tool of a bending press.
  • the upper tool driven by the press beam of the bending press, presses the sheet metal into the die recess of the lower tool.
  • the bending tool is formed by a hold-down tool of a swivel bending machine.
  • the hold-down tool which preferably comprises an upper and lower hold-down tool, and the bending deformation is carried out by a bending beam tool.
  • a metal sheet to be bent is preferably placed in a bending tool arrangement, which bending tool arrangement has an actual bending tool.
  • the light pattern emission device is activated and thus the light pattern is emitted onto a surface of the sheet metal to be bent.
  • the image of the light pattern on the sheet metal surface is periodically recorded by the image recording device.
  • the captured image is used by the image analysis module processed and analyzed and from this an actual bending process is determined.
  • the current actual bending curve is compared with a stored target bending curve by a comparison module, and the bending process is stopped when the target bending curve is reached.
  • a stereoscopic image analysis is preferably carried out by the image analysis module. This has the advantage that a contactless determination of the surface profile, in particular a distance profile, to the image capturing device can be carried out.
  • a tangent to the curvature curve is preferably formed for a section of the metal sheet that curves as a result of the action of the force of the bending tool, in the normal direction to the bending edge. Due to the formation of tangents, conclusions can be drawn early in the bending process as to the bending angle to be expected or the leg length that is being formed.
  • the sheet metal between the pressure point of the bending tool and the support points of the lower tool is deformed by the pressing force of the bending tool moving down. This deformation will not occur in a straight line, but a curvature will develop between the pressure point and the support point(s), which depends to a large extent on the material properties and the bending parameters.
  • the deformation process that occurs can be represented, for example, by a linear approximation in the form of a tangent formation, in order to be able to easily derive the bending geometry that has been achieved.
  • the sheet metal is clamped by the hold-down tool and bent by the bending beam tool around the clamping point, which also results in a deformation process between the hold-down tool and the bending beam tool. Since the course of the curvature between the pressure point and the support point or between the clamping point and the bending beam can be used to deduce (extrapolate) the achievable or achieved bending geometry, a deviation from the required bending geometry can already be identified during the bending process and a correction can be made if necessary.
  • the image analysis module determines a motion vector from the recorded image by analyzing the difference image.
  • the sheet metal is pressed into the lower tool by the bending tool, as a result of which the sheet metal will also move into the recess of the lower tool.
  • the basic structure of a lower tool is assumed to be known. This movement vector can be used to draw conclusions about the expected drawing of the sheet metal into the lower tool and thus about the resulting shortening of the flexible leg during the bending process.
  • the bending tool arrangement 2 shown is arranged in a bending press, in particular the bending tool 1 is arranged on a press beam and the lower tool 3 on a press table of the bending press. For reasons of simplification and since it has no relevance for the present description, these and other components of the bending press are not shown.
  • the bending tool 1 has a tool body 4, and the tool body 4 also has a fastening extension 5, via which the bending tool is connected to the press beam of the bending press. Opposite the fastening extension, the tool body 4 has a working edge 6, via which working edge 6 the force 8 applied by the bending press to the bending tool 1 is directed into the metal sheet 7 to be formed. As a result, the sheet metal 7 is pressed into a die recess 9 of the lower tool 3 .
  • the metal sheet 7 is deformed, which will lead to a non-linear bending curve 11 or surface curve.
  • the bending curve 11 will be linear, since the sheet metal is no longer formed here, but will pivot upwards as a result of the bending deformation in the die recess 9, so to speak, around the pivot point on the contact edge 10 .
  • a light pattern emission device 13 and an image capturing device 14 are arranged in an end region 12 of the tool body 4 .
  • the light pattern emission device 13 preferably has a light source 15 with a beam shaper 16 and a beam splitter 17 .
  • the light pattern emission device 13 is arranged in a recess 18 of the tool body 4 .
  • the light pattern 26 generated by the light pattern emission device 13 is emitted via an outlet 19 arranged in the area of the working edge 6 in the direction of the surface 20 of the metal sheet 7 to be formed.
  • the emitted light pattern 26 is reflected or scattered by the sheet metal surface 20 so that parts of it also reach the detection area 28 of the image detection device 14 .
  • an inlet opening 22 is provided in a surface 21 adjoining the working edge 6 .
  • the image capturing device 14 it is now possible for the image capturing device 14 to be arranged in the entry opening 22 or for a light guiding element to be arranged between the entry opening 22 and the image capturing device 14 . Since there is very little space in the end area 12 of the tool body 4, the latter embodiment has the advantage that the image capturing device can be relocated 14 brings a static improvement back into the tool body 4. What is essential, however, is that the detection range of the image detection device 14 can detect the surface section on the sheet metal surface 20 that is illuminated by the light pattern emission device 13 .
  • an evaluation unit 24 is arranged in the tool body 4, in which evaluation unit 24 an image analysis module is optionally provided.
  • the evaluation unit 24 is preferably connected to an interface 25 in the attachment extension 5 of the tool body 4 .
  • figure 2 shows the bending tool 1 in the embodiment variant for a swivel bending machine.
  • the bending tool 1 is designed as an upper 29 and/or lower 30 hold-down tool.
  • the bending beam tool 31 is moved by the control of the bending machine until it comes into contact with the sheet metal, whereby two contact edges 10 are formed again, one on the hold-down tool 29, 30 and one on the working edge 6 of the bending beam tool 31.
  • the bending beam tool is rotated by the determined angle pivoted, resulting in a deformation of the sheet metal between the contact edges 10 .
  • a target bending line should be formed. Due to real fluctuating material parameters of the metal sheet 7, the bending line can deviate from the calculated course and a different bending radius 32 can therefore also form. For the sake of simplicity, a radius is spoken of, although the actual bending line will mostly be of a higher order.
  • a light pattern emitting device 13 is also provided here in the end region 12 of the tool body 4 of the bending tool 1.
  • a light pattern 26 is emitted onto the surface 20 of the metal sheet 7 by the light pattern emission device 13 and the projected image on the sheet surface 20 is captured by the image acquisition device 14 .
  • a stereoscopic measurement method is preferably used in which the light pattern emission device emits a light pattern, preferably points of light or a line pattern, and their projected image on the sheet metal surface is recorded by the image acquisition device.
  • the evaluation module determines the distance between the image acquisition device and the projection of the point on the sheet metal surface for a plurality of points. No further description is given since the measuring principle of a stereoscopic distance measurement is assumed to be known.
  • Figure 3a shows the situation with an unbent sheet metal.
  • the grid is only used to illustrate the shortening that occurs during the bending process.
  • the exact course of the bending line between the contact edges can be determined by continuously or cyclically determining the distance between the bending tool 1, in particular the end region 12, and the sheet metal surface during the bending process. From this bending line, the evaluation module and/or the machine control system can now deduce the length of the leg being formed in accordance with the mathematical model of the bending deformation. If a deviation from the desired bending process is detected, the bending process can be corrected in good time to avoid incorrect bending.
  • the changing bending curve 11 allows conclusions to be drawn about stresses and force conditions in the sheet metal in the area of the die recess 9 or between the contact edges 10 can, it is thus in particular possible, in addition to the developing leg length, to determine both the bending angle and the springback to be expected by forming tangents on the bending curve 11 .
  • the advantage of the present bending tool lies in particular in the fact that the resulting bending geometry, in particular the leg length formed due to the indentation between the contact edges 10 and the springback to be expected, can be determined and corrected accordingly without contact and while the bending deformation is being carried out.
  • the light pattern 26 is emitted by the bending tool 1 onto the sheet metal surface 20 on both sides of the working edge 6 .
  • Two outlets 19, two inlet openings 22, two image acquisition devices 14 and a correspondingly designed beam splitter 17 are provided for this purpose.
  • All information on value ranges in the present description is to be understood in such a way that it also includes any and all sub-ranges, e.g. the information 1 to 10 is to be understood in such a way that all sub-ranges, starting from the lower limit 1 and the upper limit 10, are also included , i.e. all subranges start with a lower limit of 1 or greater and end with an upper limit of 10 or less, e.g. 1 to 1.7, or 3.2 to 8.1, or 5.5 to 10.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Claims (14)

  1. Outil de pliage (1) avec un dispositif de mesure de géométrie de pliage, cet outil de pliage (1) faisant partie d'une disposition d'outil de pliage (2) utilisée dans une machine de pliage, dans lequel l'outil de pliage (1) comprend un corps d'outil (4) avec une extension longitudinale, dans lequel, parallèlement à l'extension longitudinale, est réalisée une arête de travail (6) et dans lequel l'arête de travail (6) et une direction de travail normale par rapport à l'arête de travail (6) définissent un plan de pliage, caractérisé en ce que, dans une zone d'extrémité (12) du corps d'outil (4), sont disposés
    - un dispositif d'émission de motif lumineux (13) avec un diviseur de faisceau (17), qui est disposé dans une sortie (19) disposée au niveau de l'arête de travail (6), pour l'émission d'un motif lumineux (26) des deux côtés de l'arête de travail (6) sur une surface (20) d'une pièce de tôle à déformer
    - et au moins un dispositif de détection d'image (14) pour la détection d'une projection du motif lumineux (26) sur la surface (20).
  2. Outil de pliage selon la revendication 1, caractérisé en ce que le dispositif d'émission de motif lumineux (13) comprend une source de lumière (15) avec un conformateur de faisceau (16).
  3. Outil de pliage selon l'une des revendications 1 ou 2, caractérisé en ce que le dispositif d'émission de motif lumineux (13) est disposé dans un évidement (18) du corps d'outil (4).
  4. Outil de pliage selon l'une des revendications 1 à 3, caractérisé en ce que, au niveau de l'arête de travail (6), est prévue une sortie (19) pour le motif lumineux (26) émis par le dispositif d'émission de motif lumineux (13).
  5. Outil de pliage selon l'une des revendications 1 à 4, caractérisé en ce que, dans une surface (21) suivant l'arête de travail (6) et orientée le long de l'arête de travail (6), est prévue une ouverture d'entrée (22).
  6. Outil de pliage selon la revendication 5, caractérisé en ce que le dispositif de détection d'image (14) est disposé dans l'ouverture d'entrée (22).
  7. Outil de pliage selon la revendication 6, caractérisé en ce que, entre l'ouverture d'entrée (22) et le dispositif de détection d'image (14), est disposé un élément de guidage de lumière.
  8. Outil de pliage selon l'une des revendications 1 à 7, caractérisé en ce que, dans le corps d'outil (4) est disposée une unité d'analyse (24).
  9. Outil de pliage selon la revendication 8, caractérisé en ce que l'unité d'analyse (24) comprend module d'analyse d'image.
  10. Outil de pliage selon la revendication 8 ou 9, dans lequel le corps d'outil (4) comprend, en face de l'arête de travail (6), un prolongement de fixation (5), caractérisé en ce que l'unité d'analyse (24) est reliée avec une interface (25), dans le prolongement de fixation (5), qui est conçue pour la transmission d'énergie électrique et/ou de données.
  11. Outil de pliage selon l'une des revendications 1 à 10, caractérisé en ce que le motif lumineux (26) comprend un dispositif de répartition de la luminosité qui présente la forme d'une grille, d'une bande ou d'un point.
  12. Outil de pliage selon la revendication 11, caractérisé en ce que le dispositif de répartition de la luminosité est conçu de manière déterministe, stochastique ou pseudo-stochastique.
  13. Outil de pliage selon l'une des revendications 1 à 12, caractérisé en ce que l'outil de pliage est constitué d'un outil supérieur ou d'un outil inférieur d'une presse plieuse.
  14. Outil de pliage selon l'une des revendications 1 à 13, caractérisé en ce que l'outil de pliage est constitué d'un serre-flanc d'une machine de pliage pivotante.
EP15813231.6A 2014-11-04 2015-11-03 Outil de cintrage avec dispositif de mesure de la géométrie de cintrage Active EP3215284B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50797/2014A AT516465B1 (de) 2014-11-04 2014-11-04 Biegewerkzeug mit Biegegeometrie-Messvorrichtung
PCT/AT2015/050276 WO2016070212A1 (fr) 2014-11-04 2015-11-03 Outil de cintrage avec dispositif de mesure de la géométrie de cintrage

Publications (3)

Publication Number Publication Date
EP3215284A1 EP3215284A1 (fr) 2017-09-13
EP3215284B1 true EP3215284B1 (fr) 2023-08-23
EP3215284C0 EP3215284C0 (fr) 2023-08-23

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EP (1) EP3215284B1 (fr)
AT (1) AT516465B1 (fr)
WO (1) WO2016070212A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109079000B (zh) * 2018-10-11 2024-03-08 浙江工业大学之江学院 一种弯管回弹快速检测机构

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EP3215284A1 (fr) 2017-09-13
AT516465A1 (de) 2016-05-15
WO2016070212A1 (fr) 2016-05-12
AT516465B1 (de) 2016-08-15
EP3215284C0 (fr) 2023-08-23

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